globalchange  > 气候减缓与适应
DOI: 10.1029/2017JG004329
Scopus记录号: 2-s2.0-85048610773
论文题名:
Dependence of Thermal and Moisture Sensitivity of Soil Organic Carbon Decomposition on Manure Composition in an Inceptisol Under a 5-Year-Old Maize-Wheat Cropping System
作者: Biswas D.R.; Ghosh A.; Ramachandran S.; Basak B.B.; Moharana P.C.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期:5
起始页码: 1637
结束页码: 1650
语种: 英语
英文关键词: maize-wheat system ; mineralization kinetics ; moisture sensitivity ; soil organic carbon pools
Scopus关键词: carbon cycle ; climate change ; cropping practice ; decomposition ; experimental study ; Inceptisol ; maize ; manure ; mineralization ; moisture content ; reaction kinetics ; sensitivity analysis ; soil amendment ; soil carbon ; soil chemistry ; soil organic matter ; wheat ; Triticum aestivum ; Zea mays
英文摘要: Hydrothermal sensitivity of soil organic carbon decomposition in relation to global climatic changes is of great importance for C cycle in an agro-ecosystem. To assess the sensitivities of SOC as affected by different organic sources and mineral fertilizer in Inceptisol, soil samples from a 5-year-old field experiment were collected from unfertilized control, 100% NPK, vermicompost, compost, and farmyard manure (FM) treated plots and analyzed for total organic C, labile C fractions and C mineralization kinetics by incubating soils at 25 and 35°C temperatures, and 0.33 and 1.0 bar soil moisture for 90 days. Compost and FM-treated plots had ~23 and 22% higher total organic C than 100% NPK plots, respectively. Plots under vermicompost had similar C management index to FM but ~12% higher than compost. At 25°C temperature and 1.0 bar moisture, CO2 evolutions from vermicompost- and FM-treated plots were ~29 and 11% higher than compost, respectively. Carbon decay rate was invariably higher in control and 100% NPK than organically amended plots. Temperature sensitivity of C was similar at 0.33 bar but different at 1.0 bar among the treatments. Moisture sensitivity of C in organic amended plots was similar at 35°C but different at 25°C, but their moisture sensitivity values were always higher than NPK. It could be concluded that manures with low C/N ratio and high N and P content would reduce C decay rate. Hence, to enhance C sequestration and reduce CO2 emissions in changing climatic situation, organic manure like vermicompost could be recommended. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113997
Appears in Collections:气候减缓与适应

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作者单位: Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi, India; ICAR-National Bureau of Soil Survey and Land Use Planning (NBSS&LUP), Regional Centre, Jorhat, India; ICAR-Directorate of Medicinal and Aromatic Plants Research, Anand, India; ICAR-National Bureau of Soil Survey and Land Use Planning (NBSS&LUP), Regional Centre, University Campus, Udaipur, India

Recommended Citation:
Biswas D.R.,Ghosh A.,Ramachandran S.,et al. Dependence of Thermal and Moisture Sensitivity of Soil Organic Carbon Decomposition on Manure Composition in an Inceptisol Under a 5-Year-Old Maize-Wheat Cropping System[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(5)
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